Gauge changeable sleepers at Arunachal Jn. The inner sets of pandrol clip holes are for the MG. When the day comes for gauge conversion, its
a simple matter of moving the rails slightly further apart. Trains can still operate during the initial instillation phase, meaning far less disruption to the service.
.
The DHARMANAGAR - AGARTALA sec is made with that slipers ....
more... & the all railway project in NE like JIRIBUM- TUPUL , AGARTALA - SABRUM used it.
.
SOURCE :
click here